Burner attachment



Oct. 15, 1935. F. c LAHN BURNER ATTACHMENT Filed March 50, 1955 Q AT'II'ORNEY Patented Oct. 15, 1935 UNITED STATES 2,017,663 BURNER ATTACHMENT Frederick C. Lahn, Brooklyn, N. Y., assignor of ten per cent to Percy W. Valentine and five per cent to Pasquale Leanza, Brooklyn, N. Y.

Application March 30, 1935, Serial No. 13,877

17 Claims.

This invention relates to burner attachments and particularly to devices of this class adapted for use in connection with kerosene and other fuel oil burners; and the object of the invention is to provide a device designed to control and regulate the flame of the burner and to improve its combustion characteristics to provide a more efiicient operation of the burner for the several purposes for which it is intended, and especially in the use of one or more burners of the kind under consideration in a stove or range to more efiiciently and economically heat the oven, stove top or vessels placed thereon as well as the water jacket of the stove for heating a water supply system; a further object being to provide an attachment of the class described in the form of an elongated sheet metal body having a central flue portion and diverging wings to control and regulate the flame or products of combustion rising from the burner and to direct it to surrounding walls of a stove or range to produce the most efiicient results; a further object being to provide an attachment of the character described including adjustable parts or sections by means of which the same may be adapted to ranges or stoves of various kinds and types; and with these and other objects in view, the invention consists in an attachment of the class and for the purpose specified which is simple in construction, efficient in use and which is constructed as hereinafter described and claimed.

The invention is fully disclosed in the following specification of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which:

Fig. 1 is a diagrammatic sectional view of a part of a stove and burner indicating one form of my attachment in connection therewith.

Fig. 2 is a sectional view through the stove shown in Fig. 1 illustrating two burners and the attachment in elevation.

Fig. 3 is a sectional detail on the line 33 of Fig. l.

Fig. 4 is an end and sectional view of a modifled form of attachment which -I employ; and,

Fig. 5 is a plan view of the structure shown in Fig. 4.

In Figs. 1 and 2 of the drawing I have shown for the purpose of illustrating one method of carrying my invention into efiect a cooking stove in having a baking oven, part of which is indicated at H, a water jacket as indicated at I 2, a top plate l3 having removable covers l3a, and

a fire box or heating chamber I4 arranged between the water jacket l2 and the oven ll. At I5, I have indicated a part of the flue passage to I a chimney or outlet through which the products of combustion from the fire box M are adapted to pass. At I6, Ilia, I have indicated two kerosene oil burners arranged in the fire box l4. These burners may be arranged in a conventional coal or wood stove or in a stove constructed for the use of such burners. At this time, it will also. ,be apparent that my improved attachments are adapted for use in connection with burners of various kinds and classes and for various uses.

In the construction shown in Figs. 1, 2 and 3, I have shown an attachment [1 made substan- 5 tially from a single sheet of suitable material and this type of an attachment is adapted for use in conjunction with difierent factory-built burner units, whereas the attachments shown in Figs. 4 and 5 of the drawing are adapted to be'so'ldon the retail market and are adaptable for use in conjunction with various types and kinds of burners.

The attachment I1 is formed from random-- gated sheet of material, sheet metal being shown 25 in the accompanying drawing. This sheet is fashioned to form a longitudinal flue passage l8 substantially of the cross sectional contour'illustrated in Fig. l of the drawing, and bounded by a straight side wall [9 and an opposed wall 20 80 whichfor a portion of its width is parallel to 'the wall I9 and terminates at its upper end in inwardly curved flanges 2| arranged at the ends of the sheet as may be seen in Fig. 2 of the drawing and a bottom, outwardly beveled wall 22 forming a wide throat or admission opening I8a for the flue passage IS. The purpose of this wide throat construction is to create a force draft through the flue I8 and at the same time pull the flame or products of combustion from the side of the burner adjacent the oven I I to direct it to the top of the stove and thus through the flue passage IS SO as to provide more effective heating of the top plate 13 or the covers |3a thereof which are disposed above the burners l6, Ilia or to cooking pots, pans or vessels arranged thereabove.

At the lower end of the wall IS, the sheetis folded upon itself to form a downwardly directed longitudinal beveled strip or flange 23 which also forms a supporting leg for the attachment. The side portion 26 of the sheet extends upwardly and outwardly from the flange I3 forming a deflector or baffle plate to direct the flame or productsof combustion rising from the burners l6, Ilia. to the water jacket l2. h

'ported above foot members 26 welded or otherwise secured to clearance space longitudinally of the attachment whereby the flame or products of combustion -from adjacent sides of the burners may be drawn into the flue |8 through the throat I811. The end portions of this side of the attachment are supthe burners by oifset brackets or the part 22 as clearly indicated in Figs. 1 and 2 of the drawing.

are provided with outwardly pressed beads 24a, 250, respectively which form steps adapted to engage opposed side walls of the fire box M to pro vide passages 21 and 28 for the products of combustion from the fire box l4 upwardly to the top of the stove and through the flue passage l5.

The walls l9 and 28 are spaced apart by a central deflector hood 29 which extends in an upward and forward direction in the fire box I4.

-through the stove.

The burner I6 is disposed at the front of the flre box and the head 29 is adapted to draw some of the products of combustion from the burner |6a and direct the same forwardly to keep the 'heat to the front of the stove as much as possible and to counteract the natural draft which extends from the front of the fire box backwardly The burners I6, I60. are of v a conventional type employing a plurality of cylinders 38, 30a, 38b and 380 having perforated walls and arranged in an outer casing 3|. At

32 and 33 I have indicated the burner or flame passages of the two burner wicks which are employed in burners of the class under consideration. At 34 I have shown the usual top plate controlling the passage of the flame through the ,burner. Upon this plate my improved attachment is supported.

' In the use of my improved attachment, a large part of the flame and in fact, the major part of the flame rising from the burners at the oven side thereof is drawn upwardly through the flue l8 and a part thereof including the normal radiation of heat from the burner will be directed toward the oven and out through the discharge 28 as indicated by the arrows in Fig. 1 of the drawing. At the same time, the baflle 23 serves to confine the flame and heat rising from the other side of the burners in the direction of the water jacket l2 for discharge through the passage 21. The flame and products of combustion rising through the flue l8 are also extended in a forward direction by virtue of the inturned flanges 2|, thus preventing a direct discharge of the flame and 8 products of combustion into the flue passage or heating chamber l5. The flame and products of combustion will travel to both sides of the up-' turned flange 2| andthis is encouraged centrally of'the attachment by virtue of the forwardly extending hood 29 which also draws the flame and products of combustion from the burner |6a in the direction of the burner l6.

With my improved attachment, I have found from experimentation and experience that more eflicient heating of the oven, water jacket as well as stove top may be accomplished at the least amount of fuel consumption. My attachment serves to harness or retard the products of combustion within the area of the stove. At'the same time; I have found a better flame will rise from the burners and will spread over a greater area The upper free edges of the bafiles 24 and 25] of the fire box l4, stove top l3 and throughout the heating chamber or flue l5. I'he baflles 24 and 25 will spread the flame or products of combustion a greater degree within the fire box and restrict the discharge therefrom through the 5 passages 21 and 28 disposed adjacent the walls of the fire box to be'heated.

With oil burners of the class under consideration, it has long been experienced that quick and effective heating of an oven or the cooking of 10 food products disposed above the burners has been impossible, and a great delay in time has been experienced to successfully perform the cooking or baking operations desired ata great amount of fuel consumption. Further, it has 15 been found difficult if not impossible to maintain proper temperature of the water in the water jacket, especially when the stove is being used for other purposes.

With my improved attachment, however, I go.

have found that I can cook and bake substantially as quickly as these operations can be per-. formed with a conventional gas stove or range, and at all times the water in the water jacket will be maintained at the proper or desired temg5 perature. When the stove is being utilized solely for heat radiation purposes and the heating of water, the burner or burners may be turned down and operated at a very nominal fuel consumption. In addition to added eiflciency and 30 'utility, I also have effected a decided economy in the burner operation and still further have saved considerable time heretofore lost in performing the cooking and baking operations.

In the construction shown in Figs. 4' and 5 of the drawing, I have illustrated an attachment which is substantially identical in general form to the attachment l1 shown in Figs. 1 and 2 with the exception that the side portions are composed of independent parts adjustable to- 40 ward and from each other to control the size of the flue passage similar to the passage l8 and the side walls are provided with adjustable side and end wings to adapt the attachment to installations of different sizes and contour. At the 45 same time, the equivalent of the inwardly turned flanges 2| are made adjustable to regulate their height with respect to the height of the opposed wall. The equivalent of the hood 29 is also made adjustable.

50 In the construction shown in Figs. 4 and 5, I

employ separate side portions 35 and 36. The part 35 has a wall 31 similar to the wall l9 and the part 35 has a wall 38 similar to the wall struc-. ture 28, 22-. upwardly extending baffle 39 similar to the baflie 24 and the wall 38 is provided with a baffle 48 similar to the bafile 25. Adjustably supported in connection with the outer edges of the baflles 39 and 48 are longitudinal wings 4| and 42 respectively, adiustment being provided by the bolt and slot constructions represented at 43, and these wings include outwardly extending flanges Ho and 42a to take the place of the beads 24a in supporting the outer edges of the bailles 39 and 40 5 or the wings 4| and 42 in spaced relation to adjacent walls of a support. At the ends of each of the baffles 39 and 40 are adjustable end wings 44 whereby the length of said baflles may be increasedand decreased, and said wings 44 are 7 provided with elongated slots 45 through which are passed bolts 46. The latter alsopass through elongated slots 41 in coupling straps 48 employed to adjust the relative position of the plates 31 and 38 toward and from each other.

The wall 31 has an outwardly and At 49 I have shown a downwardly extending flange forming the equivalent of the flange 23, in the-construction shown in Fig. 1. The flange 49 is-fermed by a plate adjustable vertically on the wall 31 by means of a bolt and slot structure indicated'at 50 similar to the structure at 43. This serves to regulate the height of supporting the attachment above the burner. With this construction, the supporting feet 26 are omitted and I rely upon the projecting flanges 42a to support one side of the attachment in connection with the stove by engaging the adjacent wall of the stove.

At I have shown two inwardly curved plates disposed adjacent the end portions of the attachment and adjustable vertically on the wall 38 ofthe part 36 to regulate the height thereof with respect to the upper edge of the wall 31. A bolt and slot construction as at 52 and similar to the structure 43 is employed for this purpose. At 53 I'have shown a hood which takes the place of the hood 29. This hood is made of a channeled member, the side walls of which overly the upperedges of thewalls 31, 38.

adjustably support the hood 53 in the desired degree of upward inclination.

From the foregoing, it will be apparent that with the construction shown in Figs. 4 and 5 of the drawing the attachment may be adjusted to govern the spacing of the plates 31 and ,38, the length and width of the bafiles 39 and 40, the inclination of the hood 53, the relative position of the curved plates 5| with respect to the upper edge of the wall 31 as well as the height at which the attachment is supported above the burner or burners. When the attachment is composed of sheet metal, the baflles 24 and 25 and 39 and 40 may be bent to change the inclination thereof to compensate for slight variations in a stove structure as well as to vary the size of the passages 21 and 28. The attachment as shown in Figs. 1 and 2 of the drawing is self-supporting upon the burners, and the side edges of the bafilesneednot necessarily engage the adjacent walls of the fire box chamber.

The attachment may be utilized in connection with various kinds and classes of burners from a single or multiple standpoint to control and regulate the flame and products of combustion rising from the burner and direct it through the unit orapparatus in connection with which it is employed to produce greater efficiency and utility in the burner operation.

Having fully described my invention, what I claim'as new and desire to secure by Letters Patent-isz'" 1. A burner attachment of the class described V comprising a body having spaced, vertically dis- :posed central walls forming a flue passage therebetween and opening through the top and bottom of said body, said walls terminating at their lower ends in outwardly and upwardly extending baflles arranged longitudinally of the first named walls, and the upper edge of one of the first-named walls being arranged above the upper edge of A bolt 54 is passed through the overlying walls and serves to the other wall and being curved in the direction of the second named wall. i

3. A burner attachment of the class described comprising a body having spaced, vertically disposed central walls forming a flue passage therebetween and opening through the top and bottom of said body, said walls terminating at their lower ends in outwardly and upwardly extending bafliesarranged longitudinally of the first named walls, the upper edge of one of the first named walls being arranged above the upper edge of the other wall and being curved in the direction of the second named wall, and a hood portion centrally of the upper edges of the first named walls and being inclined upwardly in the direction of one end of said body.

4. A burner attachment of the class described comprising a body having spaced, vertically disposed central walls forming a flue passage there between and opening through the top and bottom of said body, said walls terminating at their lower ends in outwardly and upwardly extending baflles arranged longitudinally of the first named walls, the upper edge of one of the first named wallsv being arranged above the upper edge of the other wall and being curved in the direction of, the second named wall, a hood portion centrally of the upper edges of the first named walls and being inclined upwardly in the direction of one end of said body, and one of said first named walls having at the lower end thereof a projecting flange forming a supporting member for said body. 5. A burner attachment of the class described comprising a body having spaced, vertically disposed central walls forming a flue passage therebetween and opening through the top and bottom of said body, said walls terminating at their lower the upper edges of the first named walls and be- I ing inclined upwardly in the direction of one end of said body, one of said first named walls having at the lower end thereof a projecting flange forming a supporting member for said tom of said body, said. walls terminating at their lower ends in outwardly and upwardly extending baiiies arranged longitudinally of the first named .walls, the upper edge of one of the first named walls being arranged above the upper edge of the other wall and being curved in the direction of the second named wall, a hood portion cen-' 'trally of the upper edges of the first named walls and being inclined upwardly in the direction of. one end of said body, one of said first named walls having at the lower end thereof a projecting flange forming a supporting member for said body, means at the free outer edges of said baffles for' supporting said edges inspaced relation to adjacent walls of an apparatus in connection with which the attachment is mounted, and the free edges of said bafiies having adjustable wings to vary the area of said baffles.

'7. A burner attachment of the class described comprising a body having spaced, vertically disposed central walls forming a flue passage therebetween and opening through the top and bottom of said body, said walls terminating at their lower ends in outwardly and upwardly extending baiiies arranged longitudinally of the first named walls, the upper edge of one of the first named walls being arranged above the upper edge of the other wall and being curved in the direction 01' the second named wall, a hood portion centrally of the upper edges of the first named walls and being inclined upwardly in the direction-of one end of said body, one of said first named walls having at the lower end thereof a projecting flange forming a supporting member for said body, means at the free outer edges of said baiiles for supporting said edges in spaced relation to adjacent walls of an apparatus in connection with which the attachment is mounted, the free edges of said baffles having adjustable wings to vary the area of said battles, and means for adjusting the vertically disposed central walls toward and from each other.

8. A burner attachment of the class described comprising a body having spaced, vertically disposed central walls forming a flue passage therebetween and opening through the top and bottom of said body, said walls terminating at their lower ends in outwardly and upwardly extending baffles arranged longitudinally of the first named walls, the upper edge of one of the first named walls being arranged above the upper edge of the other wall and being curved in the direction of the second named wall, a hood'portion centrally of the upper edges of the first named walls and being inclined upwardly in the direction of one end of said body, one of said first named walls having at the lower end thereof a projecting flange forming a supporting member for said body, means at the free outer edges of said baflies for supporting said edges in spaced relation to adjacent walls of an apparatus in connection with which the attachment is mounted, the free edges of said bafiies having adjustable wings to vary the area of said baflles, means for adjusting the vertically disposed central walls toward and from each other, and the curved upper edge of one of the first named walls being formed on independent members adjustable vertically on said walls.

9. A burner attachment of the class described comprising a body having spaced, vertically disposed central walls forming a fiue passage therebetween and opening through the top and bottom of said body, said walls terminating at their lower ends in outwardly and upwardly extending bafiles arranged longitudinally of the first named walls, and means for adjusting the first named walls toward and from each other.

10. A burner attachment of the class described comprising a body having spaced vertically disposed central walls forming a flue passage therebetween and opening through the top and bottom of said body, said walls terminating at their lower ends in outwardly and upwardly extending baffles arranged longitudinally of the first named walls, and the peripheral edges of said battles including achustable wings by means of which the areas of the baffles may be varied.

11. A burner attachment of the class described comprising a body having spaced vertically disposed central walls forming a flue passage therebetween and opening through the top and bottom of said body, said walls terminating at their lowof the baflles may be varied, and means for ad- 5 justing the first named walls toward and from each other.

, 12. A burner attachment of the class described comprising a body having spaced vertically disposed central walls forming a flue passage there- 10 between and opening through the top and bottom of said body, said walls terminating at their lower ends in outwardly and upwardly extending bafiles arranged longitudinally of the first named walls, the peripheral edges oi said bafiles includ- 5 ing adjustable wings by means of which the areas of the baflies may be varied, means for adjusting the first named walls toward and from each other, and one of the first named walls including vertically adjustable plates at the upper portions 20 thereof and including inwardly curved flanges at their upper ends.

13. A burner attachment of the class described comprising a body having spaced vertically disposed central walls forming a flue passage there- 25 between and opening through the top and bottom of said body, said walls terminating at their lower ends in outwardly and upwardly extending baflies arranged longitudinally of the first named walls,

the peripheral edges of said baflles including ad- 0 justable wings by means of which the areas of the baiiies may be varied, means for adjusting the l first named walls toward and from each other, one of the first named walls including vertically adjustable plates at the upper portions thereof 5 and including inwardly curved flanges at their upper ends, and a baflle and supporting memb r adjustable vertically on one of the first named wall members and adapted to project below the lower surface of-said body to space the 'same above a suitable support. 14. A burner attachment of the class described comprising a body having spaced vertically disposed central walls forming a flue passage therebetween and opening through the top and bot- 45 tom of said body, said walls terminating at their lower ends in outwardly and upwardly extending bafiles arranged longitudinally of the first named walls, the peripheral edges of said baflies including adjustable wings by means of which the areas of the bafiles may be varied, means for adjusting the first named walls toward and from each other, one of the first named walls including vertically adjustable plates at the upper portions thereof and including inwardly curved flanges at their upper ends, a baflie and supporting member adjustable vertically on one of the first named wall members and adapted to project below the lower surface of said body to space the same above a suitable support, and other meanson said battles for supporting said body in connection with adjacent walls. 15. The combination with a fuel oilburner, of an attachment for controlling and regulating the discharge of flame and products of combustion 1 from the burner, said attachment being mounted in close proximity to the upper discharge end of the burner, means centrally of the attachment for drawing the fla'me and products ofcombustion in a vertical column above the burner and to spread the same horizontally at a point above the top of the burner, said means comprising a long contracted passage at the lower end of which is an outwardly flared throat, and oppositely directed bafiles extending from the lower portion aomeea of said first named means in an upwardly inclined direction and controlling the discharge of flame andproducts of combustion to opposite sides of the attachment and in spaced relation to said vertical column.

16. The combination with a fuel oil burner, of an attachment for controlling and regulating the discharge of flame and products of combustion from the burner, said attachment being mounted in close proximity to the upper discharge end of the burner, means centrally of the attachment for drawing the flame and products of combustion in a vertical column above the burner and to spread the same horizontally at a point above the top of the burner, said means comprising a long contracted passage at the lower end of which is an outwardly flared throat, oppositely directed baffies extending from the lower portion of said first named means in an upwardly inclined direction and controlling the discharge of flame and products of combustion to opposite sides of the attachment and in spaced relation to said vertical column, and means at the free edges of said baflies for supporting the same in spaced relation to adjacent walls of a support to form restricted passages at such edges.

17. The combination with a burner of the class described, of a device for directing the flame and products of combustion discharged from' said burner, said device having means for dividing the flame and products of combustion discharged from the burner into three distinct paths, said means comprising elongated and spaced parallel 1o flame and products of combustion horizontally at m a point above the top of the burner and above the ends of said baflies.

" FREDERICK C. LAHN. 

